Paper drinking-cup.



H. P. PROVANDIE.

PAPER DRINKING CUP.

APPLICATION FILED APR.29,1913.

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UNITED. s'rai as PATENT OFFICE.

HERBERT F. PROVANDIE, OF MELROSE, MASSACHUSETTS; ASSIGNOIR T0 AMERICAN WATER SUPPLY COMPANY OF NEW ENGLAND, OF BOSTON, MASSACHUSETTS, A COB- POBATION OF .MASSACHUSETTS.

PAPER DRINKING-CUP.

Specification of Letters Patent.

Application no April 29, 1918. Serial m.-7s4,s1a.

To all whom it may concern Be it known that I. Hnnnnn'r F. PROVAN- am, a citizen of the United States, residing at Melrose, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Paper Drinking-Cups, of which the following is a specification.

This invention relates to paper drinkingcups, and has for its object to construct a cup of a single small piece of paper which 7 shall be water-tight and which may or may which is bent or folded to form a conical cup, and one of theradial sides of the segment extends to a diflerent center from the other radial side, thereby to form a shoulder at the junction of the two radial sides. so that the side portion having the shoulder will be extended to form an overlapping portion to overlap the other side portion and tightly close the apex of the cup. If the two radial sides are alike such an overlapping portion will not be formed and the apex of the cup will not be tightly closed. On the overlapping side portion of the blank a tab is or may be integrally formed which is adapted to serve as a handle for holding the cup. When the segmental blank is bent to form a conical cup, the cups thus formed may be nested together, and when said blank is folded the cups will be collapsed.

Figure 1 is a side elevation of a' paper drinking-cup embodying this invention. Fig. 2 is a plan view of the same. Fig. 3 is a side elevation of a folded paper drinking-cup embodying this invention, the same bemg collapsed. Fig. 4 is an edge view of the cup shown in Fig. 3. Fig. 5 is a plan view of the cup shown in Fig. 3-expanded. Fig. 6 is a view of the segmental blank composing the cup, the dotted lines represent- }ngd the overlapping portion and lines of IO-represents a segmental blank which includes considerably less than one-half a circle. One of the radial sides, as 12, of the blank extends to a point or center 13, and the other non-radial side, as 15, extends to a point or center 14 below the point or center 16 which is in line with the line of fold 14, which is below the point or center 13, so that the shoulder 17 is formed, which is arranged at an angle with respect to both radial sides. said shoulder serves as one end of an overlapping portion which is mdicated by the portion between said radial side 15 and the dotted line 20.

A tab 25 of any suitable shape, and here shown as semi-circular, is or may be formed integral with the blank-on the radial side 15. In practice it is preferred to employ such tab as it is well suited to serve as a handle at the side of the cup. In forming the'cup the segmental blank thus cut is bent as in Figs. 1 and 2, or folded as in Figs. 3 and 4, so that the overlapping portion extends over the outside of the other side portion of the blank, the overlap being determined by the length of the shoulder 17 at the bottom or apex of the cup and extended from said shoulder in a radial direction to the outer edge of' the blank, as re resented by dotted line 20, so that the overlapping portion is wider at the outer end than at the inner end. The apex of the cup is thus tightly closed, and as a result the cup is water-tight. The segmental blank of which the up is made may be composed of paper coated with paraflin-wax, or the cup, when completed, may be coated with parafiin-wax. The tab, although flexible, is stiff enough to hold the small weight of water contained in the our): and it is adapted to be laid against the side of the cup, so that a plurality of cups may be nested, or in case the cup is folded, so that a plurality of cups may be superimposed. Im the case of the folded cup it will be seen that such a cup is expanded and filled, V-shape portions are formed at the front, and rear, so that a user when placing his lips to the cup to drink, the tab will be disposed at the side of the cup.

I claim A blank for forming drinking cups comprising a section of material having a curved edge and opposing straight edges, the curved edge being of less than semi-circular length, one of said straight edges being radia to a ieeaaa sai i circular edge, the other of saidl straight permit manipulation of the tab Without inedges being parallel throughout to a radius terfering with the sealing juncture.

and having an end portion at an angle to In testimony whereof, I have signed my the radial edge, the material of said paralname to this specification, in the presence lell eggs being proglactled to forrri tab, the ofitwo subscribing Witnesses.

b an eing assem e in conica ormation a and the material adjacent the parallel edge HERBERT PRQVANDIE' being fully and completely overlapped with Witnesses:

one of said straight edges being radial to GEO. R. BLINN form a double juncture at the bottom and KATmmNE G. MCNAMARA. 

